US9230967B2 - Method for forming self-aligned isolation trenches in semiconductor substrate and semiconductor device - Google Patents
Method for forming self-aligned isolation trenches in semiconductor substrate and semiconductor device Download PDFInfo
- Publication number
- US9230967B2 US9230967B2 US14/251,765 US201414251765A US9230967B2 US 9230967 B2 US9230967 B2 US 9230967B2 US 201414251765 A US201414251765 A US 201414251765A US 9230967 B2 US9230967 B2 US 9230967B2
- Authority
- US
- United States
- Prior art keywords
- forming
- semiconductor substrate
- self
- layer
- aligned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000000758 substrate Substances 0.000 title claims abstract description 53
- 239000004065 semiconductor Substances 0.000 title claims abstract description 49
- 238000002955 isolation Methods 0.000 title claims abstract description 30
- 125000006850 spacer group Chemical group 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 230000000873 masking effect Effects 0.000 claims description 13
- 238000005530 etching Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 13
- 238000012545 processing Methods 0.000 description 8
- 229920002120 photoresistant polymer Polymers 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000001459 lithography Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
-
- H01L27/10805—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
-
- H01L27/10885—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/482—Bit lines
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/733,047 US20150294972A1 (en) | 2013-12-18 | 2015-06-08 | Semiconductor device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102146985 | 2013-12-18 | ||
TW102146985A | 2013-12-18 | ||
TW102146985A TWI520265B (en) | 2013-12-18 | 2013-12-18 | Method for forming self-aligned trench isolation in semiconductor substrate and semiconductor device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/733,047 Continuation US20150294972A1 (en) | 2013-12-18 | 2015-06-08 | Semiconductor device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20150171162A1 US20150171162A1 (en) | 2015-06-18 |
US9230967B2 true US9230967B2 (en) | 2016-01-05 |
Family
ID=53369503
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/251,765 Active US9230967B2 (en) | 2013-12-18 | 2014-04-14 | Method for forming self-aligned isolation trenches in semiconductor substrate and semiconductor device |
US14/733,047 Abandoned US20150294972A1 (en) | 2013-12-18 | 2015-06-08 | Semiconductor device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/733,047 Abandoned US20150294972A1 (en) | 2013-12-18 | 2015-06-08 | Semiconductor device |
Country Status (2)
Country | Link |
---|---|
US (2) | US9230967B2 (en) |
TW (1) | TWI520265B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9911652B1 (en) * | 2017-03-29 | 2018-03-06 | International Business Machines Corporation | Forming self-aligned vias and air-gaps in semiconductor fabrication |
TWI830489B (en) * | 2022-11-09 | 2024-01-21 | 華邦電子股份有限公司 | Dynamic random access memory and manufacturing method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080265303A1 (en) * | 2007-04-27 | 2008-10-30 | Samsung Electronics Co., Ltd. | Methods of forming shallow trench isolation structures with buried bit lines in non-volatile memories and devices, cards, and systems so formed |
US8207583B2 (en) * | 2006-03-02 | 2012-06-26 | Micron Technology, Inc. | Memory device comprising an array portion and a logic portion |
-
2013
- 2013-12-18 TW TW102146985A patent/TWI520265B/en active
-
2014
- 2014-04-14 US US14/251,765 patent/US9230967B2/en active Active
-
2015
- 2015-06-08 US US14/733,047 patent/US20150294972A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8207583B2 (en) * | 2006-03-02 | 2012-06-26 | Micron Technology, Inc. | Memory device comprising an array portion and a logic portion |
US20080265303A1 (en) * | 2007-04-27 | 2008-10-30 | Samsung Electronics Co., Ltd. | Methods of forming shallow trench isolation structures with buried bit lines in non-volatile memories and devices, cards, and systems so formed |
Also Published As
Publication number | Publication date |
---|---|
US20150294972A1 (en) | 2015-10-15 |
TW201526159A (en) | 2015-07-01 |
TWI520265B (en) | 2016-02-01 |
US20150171162A1 (en) | 2015-06-18 |
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